Fan abnormal sound detection system

A detection system and fan technology, applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of difficult fan heat reflection, short detection time, detection error, etc., to save labor costs, test stability, The effect of reducing production costs

Active Publication Date: 2016-05-18
P&R MEASUREMENT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The heating of the fan during use should also be included in the detection range, which reflects to a certain extent whether the fan assembly is working abnormally. However, the detection time is generally short, and it is difficult to detect the heating of the fan during the detection reflect
[0006] In addition, in the detection of fan abnormal noise, it is often necessary to connect the sensing component

Method used

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Examples

Experimental program
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Example Embodiment

[0047] Example 1

[0048] Such as figure 1 As shown, the fan noise detection system includes a sensor module, a signal acquisition module, a data processing system, and a fixed bracket. The sensor module includes an acceleration sensor, a sound sensor, and a pyroelectric converter. The acceleration sensor is used to identify and transmit the vibration of the fan under test. The sound sensor is used to identify and transmit the sound signal of the fan to be tested, and the thermoelectric converter is used to convert the heat generated by the fan to be tested into electrical signals to obtain the thermal energy signal of the fan to be tested; the signal acquisition module includes The NI9234 data acquisition card for collecting acceleration signals, sound signals and thermal energy signals, and the NIcDAQ-9188XT Ethernet chassis for multi-channel signal measurement. The NI9234 data acquisition card is connected to the acceleration sensor, sound sensor and thermoelectric converter re...

Example Embodiment

[0051] Example 2

[0052] Such as figure 2 As shown, when the fan abnormal sound detection system of the present invention is used, it includes the following detection steps:

[0053] S1. The clamping parts of the two fixed brackets placed opposite to each other clamp the fan to be tested between the two fixed brackets, and adjust the position of the clamp on the column according to the actual situation;

[0054] S2. Install the sound sensor and the acceleration sensor on the mounting hole on the outside of the clamping part, and set the thermoelectric converter on the fan to be tested;

[0055] S3. Turn on the fan to be tested;

[0056] S4. The acceleration sensor recognizes and transmits the acceleration signal generated by the vibration of the fan to be tested, and the sound sensor recognizes and transmits the sound signal of the fan to be tested. The thermoelectric converter obtains the thermal energy of the fan to be tested by converting the thermal energy generated by the fan to ...

Example Embodiment

[0061] Example 3

[0062] Such as image 3 As shown, the thermoelectric converter used in the present invention comprises at least two elongated thermoelectric thick films 1 formed by connecting conductive metal sheets 2 in series. The thermoelectric thick film 1 uses 200 mesh antimony telluride powder as thermoelectric conductive particles, and The base cellulose is the binder and the terpineol is used as the solvent. The mass ratio of antimony telluride powder and ethyl cellulose ranges from 172:1 to 175:1. The tellurium is weighed according to the mass ratio. The antimony powder is dispersed into the terpineol solution of ethyl cellulose to make a slurry. The amount of terpineol should just dissolve the ethyl cellulose. If it is too small, it will not be enough to dissolve the ethyl cellulose. If it is too much, it will affect The consistency of the slurry, and even the final film quality, the amount of terpineol is the empirical value obtained after several tests, and then t...

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Abstract

The invention discloses a fan abnormal sound detection system and relates to the technical field of fan detection. The fan abnormal sound detection system comprises a sensor module, a signal collection module, a data processing module and a fixed support. The sensor module comprises an acceleration sensor, a sound sensor and a thermoelectric converter. The signal collection module comprises an NI9234 data collection card and an NI cDAQ-9188XT Ethernet cabinet. The NI9234 data collection card is connected with the acceleration sensor and the sound sensor and is further connected with the NI cDAQ-9188XT Ethernet cabinet. The data processing system comprises a data conversion and characteristic extraction module based on Labview and a mathematic modeling analysis system module based on Matlab. The data conversion and characteristic extraction module based on Labview is connected with the NI cDAQ-9188XT Ethernet cabinet and the mathematic modeling analysis system module based on Matlab. According to the invention, signal collection, analysis and judgment are integrated, and the manual misjudgement problems caused by inconsistent boundary judgment are reduced; in addition, the automatic degree is high, manual cost is saved, and the production efficiency is improved.

Description

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Claims

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Application Information

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Owner P&R MEASUREMENT INC
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